Hey all, I have discovered my Advanced Communications Systems Mark 4 repeater / controller manual has no board layout for the audio board. I do have the schematic, just no parts locator drawing.
It's really hard to figure out which pot is which. I need to adjust some levels. Does anyone have a copy of this drawing? I have lot's of documentation on this machine, I purchased the manual new from the factory. I also have the radio manuals. Oh', BTW, I have a working UHF Xmiter and receiver for these units if you need a spare. I'm using external radios and took the factory ones out. I'd like to meet someone that still has one of these in service. I have the Message Master and MultiFAX option boards installed. I wish I had the RS-232 board if anyone has one. Eddie KC5UIB
